Tool for forming grooves in plastic masonry.



1. D. HENDRICKS.

TOOL FOR FORMING GROOVES IN PLASTIC MASONRY.

APPLICATION FILED JUNE I5, I9I7.

1,283,76 1 Patented Nov. 5, 19.18.

ATTORNEY WITN ESSES J. D. HENDRICKS.

TooL For: romvnNG Gnoovss m PLAsnc MAsoNRY.

APPLICATION FlLAED1UNEl-5. 19H.

' Patented Nov. 5, 1918.

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INVENTOR ATTO R N EY To all whom t mag/concern:

JOHN D. HENDRICKS, OF MIAMI, FLORIDA.

TOOL FOR FORMING GROOVES IN PLASTIC MASONRY.

Be it known that I, JOHN-D. HENDnioirs, a citizen of the United States, residing at Miami, in the county of Dade and State of Florida, have invented a new and useful Tool for Forming Grooves in Plastic Masonry, of which the following is a specifi- Y cation.

' The invention relates to a marking device, and more particularly to the class of tools or implements for channeling or grooving artificial stone, cementitious or plastic surfaces.

The primary object of the invention is the provision of a tool or implement of this character, wherein brickv joints can be imitated in al stucco or plastic wall or surface for imitating a brick edifice or structure.'

Another Vczbject of thel invention isV the provision of a tool or implement of this character, wherein longitudinalY and transverse. grooves or channels can be formed Ywith accuracy and despatch without mutilating or breaking the edges of the grooves or Linvention consists in ,the features of construction, combination and arrangement of 'i pended.

parts, as will be hereinafter fully described, illustrated in the` accompanying drawings, and pointed out in the claims hereunto ap- In the accompanying drawings: i

Figure 1 is a plan view of a tool'or im ple-ment constructed in accordance with the invention applied to a plastic surfaceY for forming longitudinal grooves orV channels therein.

Fig. 2 is a sectional view on the line 2 2 "of rig. i, 100mg-in the direction of the Varrow with the tool or implement partly Abroken away.

IFig. 3 is aY sectional view on the line 3 3 of Fig. 1, looking in the direction ofthe lfrow- Fig. 4 is a View similar to Fig. 2, showing Specification of Letters Patent.

Application filed .Tune 15, 1917, Serial No. 174,926.

A 14 for Patented Nov; A5, 191s.

the tool or implement applied` for forming the transverse grooves. Y o A Fig. 5 is a plan `view with the tool or implement in the position in Fig. 4.

F ig. 6 is a perspective view of the gage runer for the longitudinal grooves.

ig. runner for the transverse grooves. o

Fig. 8 is a plan view of the cutting bit.

F ig. 9 is a longitudinalL sectionalk View thereof. f

Fig. 10 is al transverse sectional .View of the same. v

Similar reference characters indicate like parts throughout the several figures.

VReferring, to thev drawings in; detail A designates the lgroove forming tool in the shape of a hand plane, andB the adjustable gage, the details of which will be hereinafter-*fully described. i i

" The grooving tool A comprises a yiat rec-y tangular-shaped plate-like body 10 forming a base, preferably made from.Y metal, al-

though it may be made from any other suitable material, and can be `of any desirable shape supporting at its outer face near the heel end thereof a handle 11, and at its opposite forward end a knob 12. The knob is suitably fixed upon a block-like enlargement 13, centrally of said body 10, and forwardly y of a tool prop or bearing 14, which is spaced fi om the enlargement and is formed withV a forwardly inclined or beveled face 15, which merges into a suitable opening in the body 1Q, through which is Vpassed .the cuttingz ybit 16 adaptedvto restagainst the inclined for ybeveled face 15 of the prop'or bearing 14 when mounted within the plane.

Straddling the prop orbearing 14 is a clampinglyokel for the bit 16, which is passed therethrough, the yoke being Asupported upon a pivot 18, which4 is passed transversely through the prop 0r bearing connecting said yoke thereto. Threaded in the yoke 17 isa set screw 19 which; is worked against the bit ,16 for iirmlyclamping it upon the inclinedfor beveled face 15 of the prop or bearing 14,

when'` said bit 16 has been properlyV adjusted `forthe making of a groove.l It is obvious -that on the adjustment of the Vbit 16, the depth of the groove formed thereby can be varied. The bit 16, which constitutes one of the features ofl this invention, is formed with is a perspective view of the gage Yes han inwardly tapered groove or channel 2O longitudinally therein, centrally throughout its length to intersect the cutting and opposite ends thereof, and this channel is designed to receive the loose material cut by the bit in the formation of the groove for the cleaning of said groove simultaneously with the cutting thereof, the material being fed through the channel 20 in the bit and discharged therethrough. The bit is selfsharpening` by reason of its peculiar shape, the side lips 20a, which are tapered to a sharp edge, enabling a clean smooth cut to be made.

Formed transversely in the enlargement 13 and prop or bearing 14 are suitable holes for accommodating the gage rods 2l, which are slidable through said holes and support the gage runner 22, Which is also provided With suitable holes for receiving the rods 2l. The gage runner is of even thickness throughout and its thickness should be slightly less than the grooves made by the bit, so that when travelingin the grooves, the runner will not mutilate the same. Tapped in the enlargement 13 and prop or bearing llt, through the top thereof, are set screws 23, which secure the rods 21 adjustably connected ivith the plane, While tapped in the upper edge of the gage runner 22 are set screws 2i, which adjustably secure the runner upon the rods.

In Fig. 6 of the drawings, the runner 22 illustrated, is designed particularly for use in the making of longitudinal grooves for the spacingr 0f the plane With accuracy for the formation of said longitudinal grooves, While in Fig. 7 of the drawings, there is illustrated a modified form of gage runner 25, which is provided at its loiver edge With a tongue 26 of a comparatively short length for the use of this gage runner 25 in the formation of the transverse grooves.

In the use of the tool or implement for the formation of the longitudinal grooves, by reference to Fig. l of the drawings, it Will be noted that the plane is placed upon the outer face of the stucco, cementitious, or plastic substance C, it being understood, of course, that the gage B has been properly adjusted to the predetermined spacing apart of the longitudinal grooves, and the runner 22 of said gage is placed Within the previously finished groove D next to the groove to be formed in the operation of the piane, and, on the advancement of the plane, the `groove or channel Will be formed With accuracy, both in its relation to the other groove or grooves previously formed and the shape thereof Without breaking or mutilating the edges of said groove, and in thus forming the longitudinal grooves the stucco or plastic surface will be marked to simulate brick jointed formation.

By reference to Fig. 3 of the drawing it will be noted that the loiver edge of the runner operates in the same horizontal plane as the cutting edge of the bit, the runner operating on the bottom of the groove.

New, upon completion of the longitudinal grooves in the outer surface of the stucco or plastic substance, the gage runner 22 is removed and in lieu thereof is substituted the runner 25, so that the tool or implement is ready for the formation of the transverse grooves E, in the surface (l, and this is accomplished by engaging the tongue 26 on the runner in the finished groove next to the transverse groove to be formed, as is clearly illustrated in Fig. 5 of the drawings. Vl'he bit it? in the plane, ivhen actuated, cuts both the longitudinal and transverse grooves on the changing of the tool or implement in a manner, as hereinbefore described, and ivhen the longitudinal and transverse grooves have been formed. the surface C ivill simu late or be imitative of brick jointed forma4 tion, thereby giving a neat and attractive appearance to the surface. The tool Working on the side of a Wall will throvv out all cuttings Without danger of clogging, theI material cut by the vbit falling to th-e ground. It is, of course, understood that in the foi'- niation of the grooves, as hereinbefore stated, the stucco or plastic substance is moist or 'in plastic condition, so that the substance can be cut with the grooves Without resistance on advancing the plane. The contacting face of the plane ivill avoid the breaking of the substance or in any manner disguring the same While the tool or implement is in operation.

From the foregoing, it is thought that the construction and manner of operation of the invention Will be clearly understood, and, therefore, a more extended explanation has been omitted.

Vhat is claimed is l. The combination With a tool for forming grooves in plastic masonry having a cutter adjustably and detaehably clamped thereon `for forming the groove, a gage formed from ing grooves in plastic masonry having a `bearing and enlargement spaced from each other, and a cutter adjustably and detachably clamped on the bearing for forming the groove, a gage formed from a straight at bar disposed on edge to provide a runner,

supporting rods passed transversely through the bar constituting the gage and engageable in the enlargement and bearing, means for detaohably securing the rods to the bar, means mounted in the bearing and enlargement to engage the rods for adjustably oonnecting the same to the implement, and a tongue depending from the bottom edge of the bar at an intermediate point of its length.

3. The combination with a tool for forming grooves in plastic masonry having a cutter for forming the groove, of a gage runner consisting of a relatively long flat bar of even thickness to lit and travel throughout its length in a groove previously made by the cutter, the lower edge of the runner traveling in the bottom of the groove, and means for adjustably connecting the gage f runner to the implement so as to maintain the gage runner at one side of the same in spaced relation thereto, with the lower edge of the runner extending below the horizontal plane of the bottom of the implement,

and operating in the same horizontal plane as the active end of the cutter.

t. The combination with a tool for forml i ing grooves in plastic masonry having a cutter for forming the groove, of a gage runner consisting of a relatively long flat bar of the gage runner to the implement, so as to Y maintain the gage runner at one side of the same in spaced relation thereto, and a depending tongue on the gage runner of a length less than the length of the gage runner, said tongue being provided at an intermediate point of the length of said gage runner and extending below the horizontal plane of the bottom of the implement.

In testimony that I claim the foregoing as my own I have hereto ailixed my signature in the presence of two Witnesses.

JOHN D. HENDRICKS.

Witnesses: Y

I. E. SCHEILING, L. E. TBIGPIN.

Copies of this patent may be obtained for five cents earch, by addressing the Commissioner of Eatents,

Washington, D. 0. 

